Refactor: discover Subscriptions and Unit Price

Author: mikybars

exercises/tiered_pricing/solutions/mperezi/src/main/java/tv/codely/checkout/TieredPricing.java

@@ -1,10 +1,10 @@
 package tv.codely.checkout;
 
 public class TieredPricing {
-  public double totalPrice(int i) {
-    if (i == 1) {
-      return 299.0;
-    }
-    return 598.0;
+
+  private static final double UNIT_PRICE = 299.0;
+
+  public double totalPrice(int subscriptions) {
+    return subscriptions * UNIT_PRICE;
   }
 }